Answer: A. All species are connected to one another in a "family tree."
B. All species are linked to one another by common ancestry.
E. Species descend from other species just as naturally as children come from parents.
Explanation:Charles Darwin is an English Scientist, who is also an Naturalist, Geologist. He is famous for the work he published in the year 1859 where he stated the law of evolution through which most evolutionary works in the field of science has been derived.
He stated in his Theory of Evolution that all species of living organisms evolve through the natural selection inherited variations that helps the living organism to compete, survive, and reproduce favorably. To Dawning these variations may be small and insignificant. This theory tend to see living organisms as having a common ancestry, United in the form of a family tree etc.